Tools & Wizards About Us

Report Summary

  • 3

    Performance

    Renders faster than
    20% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 57

    SEO

    Google-friendlier than
    20% of websites

topdon.com

TOPDON|Automotive Diagnostic Tools, Battery Tools and Thermal Imagers – HK Topdon Technology Co., LIMITED

Page Load Speed

2.4 sec in total

First Response

279 ms

Resources Loaded

1.6 sec

Page Rendered

508 ms

About Website

Click here to check amazing TOPDON content for United States. Otherwise, check out these important facts you probably never knew about topdon.com

TOPDON.COM is a one-stop solution leading provider for automotive diagnosis. We provide quality automotive diagnostic and calibration tools, battery testers, jump starters, battery chargers, power sta...

Visit topdon.com

Key Findings

We analyzed Topdon.com page load time and found that the first response time was 279 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

topdon.com performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.2 s

1/100

10%

LCP (Largest Contentful Paint)

Value22.1 s

0/100

25%

SI (Speed Index)

Value22.4 s

0/100

10%

TBT (Total Blocking Time)

Value1,840 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.904

3/100

15%

TTI (Time to Interactive)

Value35.8 s

0/100

10%

Network Requests Diagram

www.topdon.com

279 ms

gtm.js

40 ms

jquery-3.6.0.min.js

43 ms

jQuery.page.plugin.js

64 ms

theme.js

70 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 65% of them (36 requests) were addressed to the original Topdon.com, 15% (8 requests) were made to Cdn.shopify.com and 5% (3 requests) were made to Cdn.shopifycdn.net. The less responsive or slowest element that took the longest time to load (525 ms) belongs to the original domain Topdon.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 271.5 kB (16%)

Content Size

1.6 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Topdon.com main page is 1.6 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 808.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 185.3 kB

  • Original 229.5 kB
  • After minification 196.2 kB
  • After compression 44.2 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 33.3 kB, which is 15% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 185.3 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 2.5 kB

  • Original 808.2 kB
  • After minification 805.7 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. TOPDON images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 65.0 kB

  • Original 515.8 kB
  • After minification 515.8 kB
  • After compression 450.8 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 65.0 kB or 13% of the original size.

CSS Optimization

-20%

Potential reduce by 18.7 kB

  • Original 92.5 kB
  • After minification 92.5 kB
  • After compression 73.8 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Topdon.com needs all CSS files to be minified and compressed as it can save up to 18.7 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (71%)

Requests Now

51

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TOPDON. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

topdon.com accessibility score

64

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Document doesn't have a <title> element

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

topdon.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

topdon.com SEO score

57

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Document doesn't have a <title> element

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Topdon.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Topdon.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph data is detected on the main page of TOPDON. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: